Atmospheric-pressure plasma jet

The invention relates to a article for plasma processing plasma injection device, comprising: A tall and slender centre electrode (2,15); The cylindrical outer electrode for prolonging (1) or 2 outer electrode (15,16), wherein the outer electrode is rotatably to the centre electrode and an centre electrode coaxial, or two electrodes and centre electrode substantially parallel; Is provided, wherein the outer electrode connected with the insulator between the centre electrode (3) or the insulator (18,19), the centre electrode and electric insulators is defined with a far-end and a discharging cavity; Is arranged in the discharging cavity and far-end the power line (6), and discharging cavity for providing a plasma gas, productionA for providing voltage between the centre electrode and outer electrode (9), a characterised by, and said insulator, a near-end seat is located on the outer electrode the radial direction of the outer surface or the outwards extending part (40,20).